Gravitational Field Intensity Concepts

The video tutorial explains the concept of gravitational field intensity, defined as the force experienced by a unit mass at a point in a gravitational field. It introduces the mathematical representation of gravitational field intensity and relates it to the mass of the Earth. The tutorial derives equations showing that the intensity of the gravitational field due to Earth is approximately equal to the acceleration due to gravity at Earth's surface. It also discusses how gravitational field intensity can be used to determine the weight of a body and is expressed in Newton per kg.

What is gravitational field intensity defined as?

• The speed of an object in free fall

• The distance between two objects

• The mass of a planet

• The force experienced by a unit mass at a point in a gravitational field

Which formula represents gravitational field intensity?

• I = F / M

• I = G * M / R^2

• I = M * R^2 / G

• I = G / M

What does the symbol 'F' represent in the context of gravitational field intensity?

• Gravitational constant

• Radius of the planet

• Mass of the Earth

• Force of attraction on the body

How is gravitational field intensity related to the acceleration due to gravity on Earth?

• It is approximately equal to the acceleration due to gravity

• It is unrelated to the acceleration due to gravity

• It is half the acceleration due to gravity

• It is twice the acceleration due to gravity

What is the significance of the radius 'R' in the formula for gravitational field intensity?

• It is the radius of the Earth

• It is the radius of the Sun

• It is the radius of the Moon

• It is the radius of the galaxy

How can gravitational field intensity be used in practical applications?

• To determine the color of a star

• To calculate the weight of a body

• To find the speed of light

• To measure the temperature of a planet

In what unit is gravitational field intensity expressed?

• Newton per kilogram

• Joules per second

• Meters per second squared

• Kilograms per meter